When the ignition switch is placed to the ON position, the ESC indicator light illuminates, then goes off if the ESC system is operating normally.
The ESC indicator light blinks whenever the ESC is operating.
If ESC indicator light stays on, your vehicle may have a malfunction with the ESC system. When this warning light illuminates have your vehicle checked by an authorized HYUNDAI dealer as soon as possible.
The ESC OFF indicator light comes on when the ESC is turned off.
WARNING
When the ESC is blinking, this indicates the ESC is active:
Drive slowly and NEVER attempt to accelerate. NEVER turn the ESC off while the ESC indicator light is blinking or you may lose control of the vehicle resulting in an accident.
NOTICE
Driving with varying tire or wheel sizes may cause the ESC system to malfunction. When replacing tires, make sure they are the same size as your original tires for this vehicle.
Hyundai Sonata LF 2014-2019 Service Manual: Heater Core Repair procedures
Replacement
1.
Disconnect the negative (-) battery terminal.
2.
After loosening the bolts remove the main crash pad and cowl cross bar assembly together.
(Refer to Heater -"Heater Unit")
3.
Remove the heater core cover (A) after loosening the mounting screws.
4.
Pull out the heater ...
Hyundai Sonata LF 2014-2019 Service Manual: Troubleshooting
Troubleshooting
Trouble symptomProbable causeRemedyDisplayed the warning lamp "E"(Driving is only possible with 1/ R gear)Not performed DCT learningPerform the DCT manual learning procedure.Impossible to driving with odd gearClutch actuator (Clutch motor 1 or position sensor 1 failure)Replace t ...